Rephaim
    lofty men; giants, (Gen. 14:5; 2 Sam. 21:16, 18, marg. A.V.,
    Rapha, marg. R.V., Raphah; Deut. 3:13, R.V.; A.V., "giants").
    The aborigines of Palestine, afterwards conquered and
    dispossessed by the Canaanite tribes, are classed under this
    general title. They were known to the Moabites as Emim, i.e.,
    "fearful", (Deut. 2:11), and to the Ammonites as Zamzummim. Some
    of them found refuge among the Philistines, and were still
    existing in the days of David. We know nothing of their origin.
    They were not necessarily connected with the "giants" (R.V.,
    "Nephilim") of Gen. 6:4. (See GIANTS.)